「Hand」and「within soil cavity」describes a serf planting crops, and ultimately in the mind of a peasant serf pissant, the Farmer God that makes food happen.
　「Cliff」with「pit hole homes」might possibly refer to early human settlements under large sandstone cliffs or caverns, dug into the side of a slope. Perhaps suggesting that the level of education of the「rural helpless living in yaodong pit holes like scorpions」was TRIFLING, INSIGNIFICANT during that era. Just one pit hole among the hundred or so dug into a slope was not worth anyone's care or consideration, least of all that of the central imperial government. Referring to 1/100 of a larger unit of measurement or currency, but why these elements infer hundredths is unclear. While not accepted universally, some sources state an approximate modern TINY AMOUNT, MINISCULE weight of 50 mg (that is, 50/1000 of a gram, equivalent to 0.00176 oz.) or length of 0.33 mm (0.013 in.) in China, as examples…perhaps a reference to residual soil of one variety or another that had accumulated under a thumbnail after inserting「hand within soil pathway.」If the outer element is read as「hand」then other explanations are possible using these elements, such as legitimate causes for hand-washing and carefully cleaning soil from under one's fingernails, related to a TRIFLING amount of「soil from pathway between soil walls」that becomes embedded there whilst performing some farming, planting, or scraping actions that likely need no further explanation. Some scholars explain that the glyph meaning one hundred (百) represents a thumbnail, therefore soil lodged underneath represents 1/100.
　TO TRIFLE WITH means「to toy with, play around, flirt, mess about, dally, wanton, play fast and loose, coquet, amuse yourself」and perhaps that night soil under one's thumbnail was due to「stuffing it up an ass hole」of some person or oneself, as the elements depict.
　　[　https://www.thefreedictionary.com/trifle+with　]　
　That indeed does suggest the elements as「hand filling orifice, hand plugging soil hole.」…or as a feudal lord amusing himself with a slave-serf. TINY AMOUNT, MINISCULE also describes the level of concern a feudal lord held for any single peasant that he owned back in the feudal-lord days of humanity, or today, too within most corporate structures.
　Nevertheless, when all is said and done, elements as「array of erections stuffing and dominating pathway within soil walls」remain obtuse with regard to one-hundredth of a whole, unless somehow associated with a company of troops.

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: one hundredth; centi-; Li (c. 2000 BC), sixth of the legendary Flame Emperors 炎帝 descended from Shennong 神農|神农 Farmer God, also known as Ai 哀; variant of 釐|厘
Japanese: one-hundredth, 0.3 mm, 0.1 percent, 0.0375 grams, old monetary unit
Unihan extended: thousandth part of tael
EDRDG: rin; 1/10sen; 1/10bu